* {
	padding: 0;
	margin: 0;
}

body {
	background-color: #F9F9F9;
}

.head-p {
	font-size: 14px;
	color: #999999;
}

.lesson {
	padding-top: 50px;

}

.lesson-live {
	position: relative;
	height: 520px;
	background-color: #DDDDDD;
	border-radius: 6px 0 0 6px;
}

.lesson-live img {
	position: absolute;
	right: 0;
}

.lesson-other {
	height: 520px;
	background-color: #FFFFFF;
	padding-top: 60px;
	border-radius: 0 6px 6px 0;
}

.lesson-title {
	color: #333333;
	font-size: 28px;
	text-align: center;
	padding-bottom: 50px;
}



.lesson-star {
	width: 24px;
	height: 24px;
	margin-left: 10px;
}

.lesson-evaluation {
	color: #BBBBBB;
	font-size: 18px;
	line-height: 50px;
}

.introduce-service {
	display: flex;
	flex-direction: row;
	justify-content: center;
	align-items: center;
	width: 28px;
	height: 28px;
	background-color: #005838;
	border-radius: 2px;
	margin-left: 20px;
}

.introduce-service span {
	font-size: 16px;
	color: #FFFFFF;
}

.introduce-content {
	background-color: #FFFFFF;
	height: 430px;
	padding-left: 30px;
}

.introduce-content p {
	font-size: 16px;
	color: #333333;
}

.introduce-content span {
	font-size: 16px;
	color: #999999;
	line-height: 30px;
}

.button-group {
	display: flex;
	flex-direction: row;
	justify-content: center;
	margin-top: 40px;
	height: 50px;

}

.btn-collect {
	border-color: #00925D;
	background-color: transparent;
	width: 30%;
	height: 40px;
	outline: none !important;

}

.btn-collect a {
	color: #00925D;
	text-decoration: none;
}

.btn-join {
	background-color: #00925D;
	width: 30%;
	height: 40px;
	margin-left: 50px;
	outline: none !important;
}

.btn-join a {
	color: #FFFFFF;
	text-decoration: none;

}

.lesson-footer {
	display: flex;
	flex-direction: row;
	justify-content: space-around;
	margin-top: 50px;
}

.lesson-footer p,
span {
	font-size: 18px;
	color: #BBBBBB;
}

.lesson-share {
	width: 24px;
	height: 24px;

}

.lesson-qingdao {
	height: 450px;
	padding-top: 20px;
	border-left: 15px solid #F9F9F9;
}

.introduce-student {
	height: 717px;
	padding-top: 25px;
	border-left: 15px solid #F9F9F9;
}

.introduce-student p {
	color: #595959;
	margin-left: 8px;
}

.lesson-nav li {
	padding: 10px 15px;
}

.lesson-nav a {
	font-size: 18px;
	color: #666666;
}

.lesson-nav a:hover {
	background-color: #00925D !important;
	color: #FFFFFF;
}

.lesson-qingdao span {
	font-size: 18px;
	color: #BBBBBB;

}

.course-intorduce-serve {
	display: flex;
	flex-direction: row;
	justify-content: center;
	align-items: center;
	height: 50px;
}

.course-intorduce-footer {
	display: flex;
	flex-direction: row;
	justify-content: space-between;
}

.course-intorduce-student {
	display: flex;
	flex-direction: row;
	justify-content: space-between;
}

/* 加入学习小弹窗 */
.join-class {
	position: absolute;
	top: 30%;
	left: 30%;
	height: 33%;
	width: 36%;
	background-color: rgb(255, 255, 255);
	border: 1px solid #F0F0F0;
	border-radius: 6px;
	padding: 25px 0;
}

.join-class-top {
	display: flex;
	flex-direction: row;
	justify-content: space-between;
	padding: 0 30px;
}

.join-class img {
	width: 16px;
	height: 16px;
}

.join-class-btn {
	width: 20%;
	height: 35px;
	background-color: #00925D;
	border: 1px solid #00925D;
	margin-top: 7px;
	color: #FFFFFF;
}
